Selective single trigger



Dec. 30, 1941. w. STROEVER SELECTIVE SINGLE TRIGGER Filed July 50, 1958 2 Sheets-Sheet l NTOIR v INVE oeuer' walfer Sir WITNESSES 7 M W ATTORNEYS Dec. 30, 1941. w. STIIQOEVER 2,268,349

SELECTIVE SINGLE TRIGGER Filed July 30, 1938 2 Sheets-Sheet 2 INVENTOR 20a Zfer' Siroever- '3 h' 1 BY M17 aaam w MQQV W ATTORNEYS Patented Dec. 30, 1941 UNITED STATES PATENT OFFICE 2,268,343 r SELECTIVE SINGLE TRIGGER Walter Stroever, Guttenberg, N. J. Application July 30, 1938, Serial No. 222,181 6 Claims. Cl. 4242) This-invention relates to guns, and more particularly to double barrel guns of the shotgun type.

Double barrel shotguns have been provided with both one and two triggers, that is to say, certain of the guns have been provided with separate triggers for each barrel, while other guns have had a single trigger which requires releasing and a second pull of the trigger to fire the second barrel. In such guns the right barrel ordinarily fires first, and upon the second pull of the trigger the left barrel fires. Certain improvements on that mechanism have been made in order to allow the shooter to elect which barrel he will fire, and various mechanisms for the selection of the barrel to be fired have been devised. Most of the selective one-trigger guns have been objectionable because of balking and doubling, that is to say, when the trigger was pulled the second time in order to fire the second barrel, the gun would not fire and is said to balk. In a onetrigger gun the firing finger is always on the trigger and the rebound of the gun from the shoulder drives the trigger against the finger. This often causes the second barrel to explode and is what is known as doubling."

A great many shooters, especially when hunting, like to carry two difierent types of load in their gun for use on different types of target. A selective gun-that is, one in which the shooter can select which barrel to fire-is therefore most desirable.

An object of this invention is to provide a selective one-trigger mechanism in which the shooter can elect which barrel will fire first and in which balking and doubling will be eliminated.

A further object is to provide a gun with a better safety mechanism.

A still further object is to provide a mechanism which is simple in its construction, has few working parts, and will not be afiected by wear or shock.

In the accompanying drawings- Fig. 1 is a sectional view of a-shotgun breech frame partly cut away to show the construction;

Fig. 2 is a cross-sectional view taken on the line 2-2 of Fig. 1;

Fig. 3 is a sectional view showing the mechanism in cocked position;

Fig. 4 is a sectional view showing the mechanism as the left-hand barrel is fired while the right hammer is still cocked;

Fig. 5 is a sectional view showing the right'side of the mechanism in position after the left barcustomary manner to rel has been fired and while the right hammer is still cocked;

Fig. 6 is a detailed view'of a sear trip block;

Fig. 7 is a perspective view of the trigger.

Referring more particularly to the drawings- Fig. 1 shows the conventional double barrel shotgun frame In provided with hammers II and I2. In Fig. 1 the left-hand hammer H is shown as having been fired while the right-hand hammer i2 is in cocked position. In Fig. 2 it will be noted that the firing pin l3 of the hammer protrudes through the breech block.

The hammers II and I2 are operated by sears M and I5. In the cooked position the'end l6 of thesear |4 engages the shoulder to hold the hammer |2 back. The sears are pivoted at H! and when the rear end IQ of the sear I4 is raised the forward end |6 disengages the shoulder I1 and allows the hammer |'2 to be pressed forward under pressure of the hammer spring 20, thus firing the shell.

In my mechanism I provide a conventional trigger 2| which includes an upwardly extending blade 22. In the trigger 22 is an opening 23 adapted to receive a spring 24 which is held in place by a pin 25. The spring 24 engages the trigger 23 and the frame H] to normally hold the trigger in a downward and forward position. The trigger 22 is pivoted at its forward end'in the the frame at 32* so that pressure upon the trigger will move the trigger upwardly pivoting it at 32.

The blade 22 of the trigger 2| is provided with pins which may be in the nature of screws 26 and 21. The pins 26 and 21 are adapted to engage slots 28 and 29 in the sear trip block 30. The sear trip block 30 is mounted on the trigger 2| and fits into a recess 3| therein.

Extending through the frame I6 alongside of the trigger 2| is a selective latch 33 which is mounted in a groove 34. On the latch 33 is a spring member with a depressed portion 36 and an upwardly extending portion 31. The

spring member 35 rides over a pin or screw 38 and'holds the latch 33 in an adjustable position. When-the latch 33 is in the forward position, the upwardly extending portion 31 of the spring 35 rests on the pin 38. When the latch 33 is moved to a rearward position, pressure is exerted on the spring 35 in view of the depressed portion of the latch 36, and when the latch 33 is moved'all the way to the rearward position the depressed portion 36 has ridden over the pin 38 and is to the rear of the pin 38. I

Mounted inthelatch 33 is a spring 39 which we will refer to as the trip block spring. The spring 39 communicates with the vertical channel 45 in the sear trip block and controls the movement of the sear trip block 30. Accordinglywhen the latch 33 is moved to a forward position, the spring 39 will cause the sear trip block to move on the pins 26 and 21 to a forward position, and likewise when the latch 33 is moved to a rearward position the sear trip block 30 will likewise be moved to a rearward position. The spring 39 is a yielding spring and allows a certain amount of lateral motion in the sear trip block without a corresponding lateral motion in the selectivelatch 33.

When the left barrel of the gun is to be fired first the selective latch 33 is moved into-the forward position, as shown in Fig. 1, Fig. 3', and Fig. 5. The hammer is released when the trigger is pulled by upward pressure on the contact elbow 4| of the sear 4 by the shoulder 43 of the sear trip block 33'. When the gun is cooked for fire of the left barrel first, the rear of the contact elbow 4| of the sear |4 exerts pressure on the cam surface 44'of the sear trip block 35' and causes it to move rearwardly against the spring 39 so that the contact elbow 42 of the sear l5 registers with the'channel'45'of the, sear trip block 3|] and the sear" |5=is not affected by the raising of the trigger and the sear trip block 30 when the trigger 2| i's'pulled. As soon as the left barrel is fired, the pressure exerted on the cam surface 44' by the contact elbow 4| is released and the spring 39 moves the sear trip block tilinto the full forward position so that a second pull of the triggerwill'cause the'shoulder 4B of'the sear trip block 30 to exert pressure on the contact elbow 42 of the sear |5 to release the right hammer.

When it'is desired to fire theright barrel first the selective latch 33 is moved to a rearward position. Pressure on the inside 4! of the-contactv elbow 42 will then be exerted against the cam surface 48 to move the sear trip block slightly forward'against the spring 39 so that the contact elbow 42 will register with the shoulder 49 and the contactelbow 4| of the sear l4 will register with the channel 40. When the trigger is pulled, the pressure exerted by the shoulder 49 against the contact elbow 42 will fire the right barrel. The raising of thesear l5 will release the pressure exerted by the inside 41 of the contact elbow 42 against the cam surface 48- and allow the sear trip block to move to a full rearward position. This will cause the shoulder 50 to register with the contact elbow 4| and upon a. second pull of the trigger the left-hand barrel will be fired. The sears I4 and I5 are provided. with the customary sear springs 5| which exerta downward pressure upon the rear of the sears l4 and I5 when; the hammers are cocked.

My improved mechanism is provided. with the customary breech lever 52 and the safety thumb piece 53. The operation of the breech lever 52 will cause the rod 54 to move rearwardly against the depending pins 55 of the safety thumb piece 53- to place the safety thumb: piece in a rearward or safe position. Between the-depending pins. 55 is an elbow 5S pivoted to: the bottom of the frame.

at 51 so that the rearward movement of. the safety thumb piece 53 will cause the elbow 56 to pivot at 5! and the end thereof 58 will be raised. This will cause the forward motion of the spur 59. The spur 59 is pivoted at. 60- and is provided with a pin 6|. The rear end of the blade 2.2 of the trigger 2| is extended behind the trigger 2| and when the spur 59 is moved forward by the action of the elbow 56 the pin 6| will look over the corner 62 of the blade 22, thus militating against the upward movement of the trigger 2| and making it impossible to fire the gun.

The lower portion of the rear end of the blade 22 has a concave surface 63 terminating in a hook 64. Pivoted below the Hook 64 at 65 is a weight 66 normally held in a rearward position by the spring 61 which I have shown fastened to the elbow 56 at 68 but which may be of any suitable construction. The pivoted weight 66 is provided with a serrated surface 69 adapted to engage the hook 64 of the blade 22. When the gun is fired the recoil will cause the pivoted weight GSto move forwardly and under the blade 22 of the trigger 2| against the spring 61, as shown in Fig. 4. This will prevent doubling or unintentional firing of the second barrel. A slight pressure on the trigger will remove the hook 64 from the serrated surface 69 and the spring 61 will return the pivoted weight to its normal position, as shown in Fig. 1.

It will be seen that in use the shooter has the option of operating with only one barrel or both. He may elect which barrel he desires to fire first by a slight movement of the selective latch by his trigger finger. He may then fire either or both barrels as he pleases. Upon cocking the gun the safety is put on and the spur 59 with. its pin 6| prevents any accidental firing. The operation of the pivoted weight 66 with its serrated contact surface 69 prevents any accidental doubling since the sear trip block is held in the. proper position by the contact elbows of the scars until the trigger is allowed to return to theforward position, when the sear trip block will move into, proper position for the second firing.

While in the drawings I have shown a number of parts not specifically described in this specification, it will-be'understood that these parts are conventional and are only shown for the purposev of showing the relationship between them and my improvement.

I claim:

1. In a double barrel shotgun having two sears, a trigger mechanism comprising a trigger, and a sear trip. block slidably mounted on said trigger, spring means for yieldingly holding said sear trip block, in selective positions said sear trip block being provided with cam surfaces, channels and contact shoulders, whereby the cooking of the gun causes one of said sears to exert pressure against one of said cam surfaces to move said sear tripblock against said spring means placing one of said shoulders against the said sear and causing one of said channels to register with the opposing sear, whereby the operation of the trigger will exert pressure against the first-mentioned sear firing the barrel, releasing the pres sure against said cam. surface, allowing said sear trip blockto be moved under the pressure of said spring means and placing another of said contact shoulders against the second sear.

2. Ina double barrel shotgun having two sears, means for; selective single trigger firing comprising; a trigger, a sear trip blockslidably mounted on said trigger, means for yieldingly holding said sear trip block in either of two positions, said block being provided with contact shoulders, channels, and opposing cam surfaces, whereby the placing of the sear trip block) in one position will place the said cam surfaces, channels and, contact shoulders, in such a position with relation to said sears that the successive operation of the trigger will cause the firing of first one barrel and then the other, and when the sear trip block is placed in the other selected position the order of firing of said barrels will be reversed.

3. In a double barrel shotgun having two sears, means for selective single trigger firing comprising a trigger, a scar trip block slidably mounted on said trigger, means for yieldingly holding said sear trip block in one of two positions, a spring allowing limited motion between said block and said means, said block being provided with contact shoulders, channels and cam surfaces so placed that the cocking of the gun causes one of said sears to exert pressure against one of said cam surfaces to cause said block to move slightly against said spring and to place one of said shoulders against said sear, whereby the operation of the trigger will exert pressure against and release said sear, removing the pressure from said cam surface and placing another of said contact shoulders under the second sear, and means for freely reversing said process, said means comprising opposing cam surfaces, channels and contact shoulders on said block operable when said block is placed in the other position.

4. In a double barrel shotgun having two sears, means for selective single trigger firing comprising a trigger, a sear trip block slidably mounted on said trigger, a spring means for yieldingly holding said sear trip block in either one of two positions on said trigger, means communicating with said spring means for freely changing the position of said sear trip block, said sear trip block being provided with opposing cam surfaces, shoulders adjacent said cam surfaces, and a second pair of shoulders separated from the firstmentioned shoulders by means of a channel, elbows on each of said sears, one of said elbows exerting pressure on one of said cam surfaces when said gun is cocked and said sear trip block is in one position to move said sear trip block against said spring means and to bring the shoulder adjacent said cam surface into contact with said elbow, and the opposing cam surface contacting the other sear elbow when the sear trip block is in the other position to move said sear trip block against said spring means and to bring the adjacent shoulder into contact with said second sear elbow.

5. In a double barrel shotgun having two sears, means for selective single trigger firing, comprising a trigger, a sear trip block slidably mounted on said trigger and means for yieldingly holding said sear trip block in one of two positions, said sear trip block having a pair of oppositely facing cam surfaces, shoulders adjacent each of said cam surfaces, and additional shoulders being separated from said first-mentioned shoulders by channels, each of said channels registering with the first-mentioned shoulders adjacent said opposing cam surfaces.

6. A sear trip block having two sides, a cam surface, a shoulder adjacent said cam surface, an additional shoulder spaced from said firstmentioned shoulder by a channel on one side of said sear trip block facing in one direction and a corresponding cam surface, an adjacent shoulder, channel and second shoulder on the opposite side of said sear trip block facing in the opposite direction and so arranged that the shoulder adjacent each of said cam surfaces is opposite the channel separating the shoulders on the opposite side of said sear trip block.

WALTER STROEVER. 

